Granted Patent
Utility
US 6,137,278 · App. 09/313,423
Clamping circuit
Inventors:
Harald Christian Koffler, Martin Feldtkeller
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: May 17, 1999
Inventors
Harald Christian Koffler
Martin Feldtkeller
Assignee (at issue)
Siemens Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.